71140663 has 8 divisors (see below), whose sum is σ = 78377616. Its totient is φ = 64032000.

The previous prime is 71140639. The next prime is 71140697. The reversal of 71140663 is 36604117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71140663 - 2²⁵ = 37586231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71140063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30906 + ... + 33127.

It is an arithmetic number, because the mean of its divisors is an integer number (9797202).

Almost surely, 2^71140663 is an apocalyptic number.

71140663 is a deficient number, since it is larger than the sum of its proper divisors (7236953).

71140663 is a wasteful number, since it uses less digits than its factorization.

71140663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64145.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 71140663 is about 8434.4924565738. The cubic root of 71140663 is about 414.3550498810.

The spelling of 71140663 in words is "seventy-one million, one hundred forty thousand, six hundred sixty-three".